Results 11 to 20 of about 1,800,078 (146)
Establishment of Caco-2 Cell Model for Transporting Glucoside Compounds(转运葡萄糖苷类化合物的Caco-2细胞模型建立) [PDF]
Shipin kexue jishu xuebao, 2021 Caco-2 cell model for the transport of glucoside compounds was established to provide the basis for studying intestinal absorption of glucose and glucoside compounds.
LIN Jiali(林佳丽) +2 more
doaj +1 more source
Fast Determination of Calcium in Soybean Milk and Its Material by Flame Atomic Absorption Spectrometry(火焰原子吸收光谱法快速测定豆浆及其原料中的钙) [PDF]
Shipin kexue jishu xuebao, 2013 The calcium concentrations in soybean milk and its material were determined by flame atomic absorption spectrometry（FAAS）. The optimal dilution ratio of soybean milk and the amount of digestion acid were discussed by single-factor experiments.
ZHANG Cong-lan(张丛兰) +6 more
doaj +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2001 用活性炭吸附丝累积采集桂花活花的香气成分，通过热解脱附直接导入色谱/质谱仪进行定性定量分析，鉴定出β-芳樟醇、氧化芳樟醇、β-顺-罗勒烯等41种化合物.本方法可用于鲜花香气成分的活体分析.
FENGJan-yue(冯建跃) +3 more
doaj +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2000 铝硅合金试样经酸溶解,在0.20 mol·L-1氢氟酸和0.1 1 mol·L-1硼酸介质中,用电感耦合等离子体发射光谱(ICP-AES)法同时测定主要成分Si及杂质元素Fe，Zn，Cu，Mn，Ti，Mg含量。结果表明此方法检出限为0.0010～0.079 μg/mL ...
WUJian-zhi(吴建之)
doaj +1 more source
Analysis of the growth mechanisms of CO/Si(100)-(2×1)interface by UPS(CO在Si(100)表面生长的光电子谱研究)
Zhejiang Daxue xuebao. Lixue ban, 2000 本文着重介绍了CO/Si(100)界面CO原子与表面Si原子的相互作用.在不同覆盖度或经不同退火温度处理，CO，Si原子之间存在不同的相互作用.当覆盖度为10ML时经350℃退火处理后，Si(100)表面将形成COSi2处延.
BAODe-song(鲍德松) +2 more
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Zhejiang Daxue xuebao. Lixue ban, 2013 通过抗逆性较差的香菇135品种和自然变异抗性新菌株庆元9015品种的RAPD研究，寻找两者间有差异的基因，并对其进行克隆和测序.GenBank查询结果表明，这些片段可能的部分开放阅读框(ORF)与多种生物的水解酶或者信息素受体的部分氨基酸序列有较高的同源性.这些片段可以作为两者间的特异分子标记.
YEChang-wen(叶长文) +4 more
doaj +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2017 建立了基质固相分散萃取-气相色谱/质谱法测定土壤中13种多溴联苯醚的分析方法.对固相分散剂种类、样品与分散剂用量比例、洗脱溶剂及用量进行了选择和优化.最佳前处理条件为：2 g样品与4 g酸性硅胶固相分散剂研磨10 min，混合物装入预先填好4 g无水硫酸钠和4 g酸性硅胶的玻璃柱中，以50 mL正己烷/二氯甲烷(v：v= 1:1)混合液洗脱并浓缩至0.5 mL，进GC-MS分析.13种多溴联苯醚在2~200 ng • g-1内呈良好的线性关系(R2>0.992).平均加标回收率在81%~103 ...
WEIZi(魏孜) +4 more
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How endorser attributes influence conservation communication
Conservation Biology, EarlyView.Abstract Conservation communication often uses the celebrity endorsement strategy. However, robust evidence regarding its effectiveness is still limited. More importantly, practitioners do not have guidelines for selecting an ideal endorser because there is no clear consensus on what endorser attributes are most critical.
Xia He, Tien Ming Lee
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT Although the use of AI technologies (e.g., chatbots and automated writing evaluations (AWE)) has gained considerable attention in language learning fields in recent years, how AI technologies have been designed and implemented in language learning education, as well as their effectiveness, is understudied.
Shen Qiao +2 more
wiley +1 more source
The Development and Validation of the Chinese Vocabulary Levels Test
International Journal of Applied Linguistics, EarlyView.ABSTRACT In response to the increasing need for effective Chinese vocabulary assessments, this study developed the Chinese Vocabulary Levels Test (CVLT), a test designed for intermediate‐level Chinese as a second or foreign language (CSL/FL) learners, based on the vocabulary lists (levels 4–6) from the Chinese Proficiency Grading Standards for ...
Shiwei Qi, Ailan Fu
wiley +1 more source